Improvement in fire-extinguishers



SAMUEL B. JOHNSON.

Device for Extinguishing Fire.

"7,891. -Patented August 8, 1871.

NITED STATES PATENT OFFICE.

IMPROVEMENT IN FIRE-EXTINGUISHE RS.

Specification forming part of Letters Patent No. 117,891, dated August8, 1871.

To all whom it may concern:

Be it known that I, SAMUEL B. JOHNSON, of the city and county ofPhiladelphia, State of Pennsylvania, have invented a new and usefulDevice for Extinguishing Fire 5 and I do hereby declare the following tobe a clear and exact description of the nature thereof, sufficient toenable others skilled in the art to which my inven tion appertains tofully understand and use the same, reference being had to theaccompanyin drawing making part of this specification in which thefigure is a view of acasing employed in connection with my invention.

This invention relates to a mode of extinguish ing fire, and consists ofa suitable casing or receptacle, which may be termed a grenade, for agas, acid, or other medium, which will extin guish fire, which casing orreceptacle is to be thrown by hand or discharged as a projectile againstor into the fire, so as to break, and there by liberate the contents ofthe casin g in order to act on the fire for the purpose. stated.

Referring to the drawing, A represents a casing or vessel, which may beof a globular, cylindrical, or other form, and constructed of metal,glass, or other material suitable for the purpose intended. This vesselis to be filled by compression with carbonic acid, chlorine gas, or anyother gas or acid, or combination thereof, or any solid or liquidmaterial, which, when united or mixed with water or otherwise, willproduce a gas or acid to be capable of extinguishing fire.

In carrying out my invention the vessel A should be provided with aninside or outside chamber for an explosive material, suitable nipples,fuse-tubes, or caps, or other devices, and is to be thrown by hand orprojected by means of gunpowder or other agent against or into the fire,whereby, by means of fulniinates, caps, fuses, or other mediums, thevessel will burst or be broken, thus liberating the gas or acid, andthereby causing the latter to come in contact with the fire, so as toextinguish the same.

It is preferable that the vessel be in the form of a grenade or bo1nb,and constructed of glass, that it can be easily thrown or discharged,and break when it strikes the spot against or toward which it isdirected,

Having thus described my invention, what I claim as new, and desiretosecure by Letters Patent, is- 1 1.. The mode of extinguishing fire bymeans of a vessel containing an extinguishing medium, to be thrown orprojected into the fire, and by breaking to liberate said medium inorder to act on the fire, substantially in the manner set forth.

2. A vessel to be thrown with the extinguishing medium into the firc,and 0pc ate substantially as and for the purpose described.

To the above I have signed my name this 17th day of July, 1871.

SAMUEL B. JOHNSON.

Witnesses JOHN A. Wrnnnnsnnm, PERCY V. KNEASS.

